I had a 2016 Nissan 370Z Nismo come in in October that was setup and tuned by another shop with some fundamental flaws in their combination. I had run this car, with their tune, on my dyno, I swapped out some key parts and retuned it and documented the gains.
Nissan 370Z Nismo 2016
BEFORE // Short ram intakes, Motordyne M370 Manifold, EPS throttle bodies, Headers, CBE, tuned on ECUTEK. 301whp/239wtq SAE.
AFTER // threw the intakes and manifold out, replaced with AdminTuning CAI and Z1 ported 370Z upper manifold, retuned on UpRev. 323whp/257wtq SAE.
Language NSFW, enjoy the subtitles.